From: Mikko Rasa <tdb@tdb.fi>
Date: Wed, 28 Apr 2021 11:44:00 +0000 (+0300)
Subject: The load cache still needs to be pruned after the loop too
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=7302c50728ea317bcabe2d243af6b9142aac4ccd

The load cache still needs to be pruned after the loop too

Under SPIR-V's structured flow control rules it's not permissible to use
a result from inside the loop except with OpPhi.
---

diff --git a/source/glsl/spirv.cpp b/source/glsl/spirv.cpp
index 63c76f9a..72f73bd5 100644
--- a/source/glsl/spirv.cpp
+++ b/source/glsl/spirv.cpp
@@ -1902,6 +1902,7 @@ void SpirVGenerator::visit(Iteration &iter)
 	writer.write_op(content.function_body, OP_BRANCH, header_id);
 
 	writer.write_op_label(merge_block_id);
+	prune_loads(header_id);
 	reachable = true;
 }